As a cube can't have the same direction of 2 edges from the center of the circle
only when its 90° or 180° so you can't have that you want where you are!

Sections will always inclined so difference of distances between the 2 circles!
(in fact Ellipses & Circles)

Here little cube can't have 45° of the Angle center!


Here circles are drawn on the face section for show the deformation!
(they will be also ellipses by these triming lines!